Card Identification Forum

Can anyone help identify these?  Are they represented on TCDB?  If so, I'm not finding them among Mattingly's checklist.  I see the top sticker being advertised on eBay as a 1987 STC sticker with asking prices around $30-60.  I wonder if it's supposed to be "TSC".  It certainly doesn't resemble the logo of Tractor Supply Co., though.

The blue Broder card has to date to 1990 with that now-hilarious proclamation of Mattingly and Maas as "The New M&M Brothers"!   While the back isn't blank, there is nothing present to help identify the maker.

The sketch card stumps me.  I can't find anything out about this one at all.  It was housed in the 1989 section of a large Mattingly collection I recently acquired.  That doesn't exactly mean that the year is correct, but perhaps a good clue.  It's blank-backed, on thin, almost sketch paper stock.  

They all look unlicensed / homemade to me.

For sure!  Although the sketch card has something to the effect of "Player endorsed image" in the lower left corner.  Also, that pennant logo in the lower right corner is too blurry to make out.  Yup, they all scream unlicensed.  

Searching eBay for the STC I find other listings that list it as "Sports & Toy Concepts" which sort of sounds like this was some kind of prototype, though why anyone would swipe a major brand's design for a prototype doesn't make sense.

1987 STC Sports & Toy Concepts Sticker Card

https://www.ebay.com/itm/275614931116

1992 New York Yankees Baseball Card Don Mattingly Kevin Maas

https://www.ebay.com/itm/133199438095

Couldn't find anything on the last one.

Thank you!  Two down.  It would be nice if the first two could be added to this site.  I haven't tried my hand at that yet.  

The card in the upper corner was issued with a Don Mattingly plastic baseball bat back in the late 80's that was sold at Toys R us

Just a reminder on what is needed from you to add these:
https://www.tcdb.com/FAQ.cfm?ITEM=Unlicensed

Thanks, Bill and Dan.

Perhaps not knowing the exact release date for these cards has been the reason nobody has added them as of yet.

mattinglylist.com is the Mattingly checklist that has (almost) everything.  These are listed on there as:

90 STC Puffy Sticker

90 The New M&M Brothers

91 Jeff V. Erickson Artwork

I don't know how much evidence there is for those years.